> Do you have any other ways the developer can make a living? Yes. Sell commercial software or If the developer cares about open source then charge for support

> Do you have any other ways the developer can make a living? Yes. Sell commercial software or If the developer cares about open source then charge for support. Its a disservice IMO to make the user install for free and then ask them money to use other features wasting users time. There is a incentive to make worst product in the free version which goes against the principle of opensource.